Java使用Thread和Runnable的线程实现方法比较

public class ThreadDemo
{
  public static void main( String[] args )
  {
    TestThread newTh = new TestThread( );
    // 一个线程对象只能启动一次
    newTh.start( );
    newTh.start( );
    newTh.start( );
    newTh.start( );
  }
}
class TestThread extends Thread
{
  private int tickets = 5;
  public void run( )
  {
    while( tickets > 0 )
    {
      System.out.println( Thread.currentThread().getName( ) + " 出售票 " + tickets );
      tickets -= 1;
    }
  }
}

public class ThreadDemo
{
  public static void main(String[]args)
  {
    // 启动了四个线程，分别执行各自的操作
    new TestThread( ).start( );
    new TestThread( ).start( );
    new TestThread( ).start( );
    new TestThread( ).start( );
  }
}
class TestThread extends Thread
{
  private int tickets = 5;
  public void run( )
  {
    while (tickets > 0)
    {
      System.out.println(Thread.currentThread().getName() + " 出售票 " + tickets);
      tickets -= 1;
    }
  }
}

public class RunnableDemo
{
  public static void main( String[] args )
  {
    TestThread newTh = new TestThread( );
    // 启动了四个线程，并实现了资源共享的目的
    new Thread( newTh ).start( );
    new Thread( newTh ).start( );
    new Thread( newTh ).start( );
    new Thread( newTh ).start( );
  }
}
class TestThread implements Runnable
{
  private int tickets = 5;
  public void run( )
  {
    while( tickets > 0 )
    {
      System.out.println( Thread.currentThread().getName() + " 出售票 " + tickets );
      tickets -= 1;
    }
  }
}